package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatProperties weChatProperties;

    /**
     * 登录
     * @param userLoginDTO
     * @return
     */
    public User login(UserLoginDTO userLoginDTO) {
        String  openid= getOpenId(userLoginDTO.getCode());
        if (openid==null) throw new LoginFailedException(MessageConstant.LOGIN_FAILED);

        User user = userMapper.getByOpenid(openid);

        if (user==null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }
        return user;
    }


    private String getOpenId(String code){
        String url = "https://api.weixin.qq.com/sns/jscode2session";
        HashMap<String, String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");

        String entity = HttpClientUtil.doGet(url, map);

        JSONObject jsonObject = JSON.parseObject(entity);
        String openid = (String) jsonObject.get("openid");
        return openid;
    }
}
